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  • Author or Editor: A. Blonska-Tabero x
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Abstract

The binary Zn2FeV3O11–Mg2FeV3O11 system has been studied by XRD, DTA, IR, and SEM methods. A new continuous substitution solid solution with the formula Zn2−xMgxFeV3O11 has been obtained by high-temperature synthesis. The DTA investigations were used to choose the heating temperatures as well as for determination of thermal stability of the new triclinic phase. The influence of the degree of Mg2+ ion incorporation on the unit cell volume as well as on the position of the IR absorption bands of the solid solution have been determined. The morphology of crystals of the new phase is presented.

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Abstract  

The reactivity of iron(III) orthovanadate(V) towards zinc divanadate(V) in the solid state was investigated over the whole component concentration range. On the base of DTA and XRD measurements the phase diagram of the FeVO4-Zn2V2O7 system in the subsolidus area was constructed for the whole component concentration range.

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Abstract  

As a result of solid-state reactions three cadmium vanadates(V) have been obtained, i.e. CdV2O6, Cd2V2O7 and Cd4V2O9. Melting temperature and the product of melting has been determined for Cd4V2O9. Thermal properties of the obtained cadmium vanadates(V) have been reinvestigated. The phase equilibria being established in the CdO-V2O5 system over the whole components concentration range up to the solidus line were described.

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Abstract  

A study of synthesis and thermal decomposition of the Zn4V2O9 have been conducted by XRD method using a high-temperature X-ray attachment. A melting temperature and the way of melting that compound have been established.

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Abstract  

A diagram of phase equilibria established in a two-component oxide system V2 5–ZnO has been worked out applying differential thermal analysis and X-ray phase analysis as well as depending on investigations carried out with the aid of high-temperature X-ray attachment and scanning electron microscope linked to an X-ray microanalyser.

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